path.rb in build-files-1.7.0

- old
+ new

@@ -20,10 +20,14 @@
 
 module Build
 	module Files
 		# Represents a file path with an absolute root and a relative offset:
 		class Path
+			def self.current
+				self.new(::Dir.pwd)
+			end
+			
 			def self.split(path)
 				# Effectively dirname and basename:
 				dirname, separator, filename = path.rpartition(File::SEPARATOR)
 				filename, dot, extension = filename.rpartition('.')
 				
@@ -42,10 +46,18 @@
 				else
 					path.split(File::SEPARATOR)
 				end
 			end
 			
+			def self.root(path)
+				if Path === path
+					path.root
+				else
+					File.dirname(path)
+				end
+			end
+			
 			# Return the shortest relative path to get to path from root. Root should be a directory with which you are computing the relative path.
 			def self.shortest_path(path, root)
 				path_components = Path.components(path)
 				root_components = Path.components(root)
 				
@@ -102,9 +114,20 @@
 				@components ||= @full_path.split(File::SEPARATOR).freeze
 			end
 			
 			def basename
 				self.parts.last
+			end
+			
+			def parent
+				root = @root
+				full_path = File.dirname(@full_path)
+				
+				while root.size > full_path.size
+					root = Path.root(root)
+				end
+				
+				self.class.new(full_path, root)
 			end
 			
 			def start_with?(*args)
 				@full_path.start_with?(*args)
 			end